Two dimensional simulation of heat transfer and fluid flow in a rectangular natural circulation loop containing PCM suspensions

C. J. Ho, S. Y. Chiu, J. F. Lin

Research output: Contribution to conferencePaper

Abstract

A two-dimensional numerical simulation, via a finite difference method, of fluid flow and heat transfer in a rectangular natural circulation loop is presented to explore efficacy of using solid-liquid phase change material (PCM) suspensions as a heat transfer medium. A continuum mixture flow model is used for the buoyancy-driven circulation flow of the PCM suspensions together with an approximate enthalpy model to describe the solid-liquid phase change (melting/freezing) process of the PCM particles in the loop. Parametric simulations have been conducted for the pertinent physical parameters of a loop with fixed geometrical configuration in the following ranges: the modified Rayleigh number Ra* = 109 ∼ 1013, the modified Stefan number Ste* = 0.05 ∼ 0.5, the particle volumetric fraction cv = 0 ∼ 20%, and the modified subcooling factor Sb* = 0-2.0. The melting/freezing processes of the PCM particles at the heated/cooled sections of the loop are closely interrelated in their inlet conditions of the suspension. Closer examination of numerical results reveals that there could be a flow regime in the parametric domain where heat transfer performance of the suspension circulation loop is significantly enhanced, due to contribution of the latent heat transport associated with melting/freezing of PCM particles.

Original languageEnglish
Pages513-522
Number of pages10
DOIs
Publication statusPublished - 2004 Jan 1
Event2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004 - Charlotte, NC, United States
Duration: 2004 Jul 112004 Jul 15

Other

Other2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004
CountryUnited States
CityCharlotte, NC
Period04-07-1104-07-15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Two dimensional simulation of heat transfer and fluid flow in a rectangular natural circulation loop containing PCM suspensions'. Together they form a unique fingerprint.

  • Cite this

    Ho, C. J., Chiu, S. Y., & Lin, J. F. (2004). Two dimensional simulation of heat transfer and fluid flow in a rectangular natural circulation loop containing PCM suspensions. 513-522. Paper presented at 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004, Charlotte, NC, United States. https://doi.org/10.1115/ht-fed2004-56244